The transfer of food energy from the source in plants through a series of organism with repeated stages of eating and being eaten is known as:
A.Food web
B.Food chain
C.Food cycle
D.None of these
Category: MISCELLANEOUS Mcqs
Which element is vital to plants and animals for the synthesis of proteins and nucleic acies?
A.Oxygen
B.Nitrogen
C.Carbon
D.None of these
The transfer of food energy from the sources in plants through a series of organisms with repeated stages of eating and being eaten is known as:
A.Food way
B.Food web
C.Food link
D.Food chain
In USA, electricity is also being generated with the half geothermal power plants in which is used water:
A.Streams
B.Sea
C.River
D.Hot springs
The land may be abused by:
A.Erosion and trampling by animals
B.Poor agricultural practices and excessive water
C.Over-grazing and extensive ploughing
D.Erosion, poor agricultural practices and over grazing
The annual population growth rate is Pakistan is the highest in the world, which is:
A.1.50%
B.1.80%
C.1.90%
D.1.10%
Thick clouds of smoke containing soot and other particles coming out of the factories cause health problems for nearby people. Such as irritation of eyes and:
A.Heart diseases
B.Gastric diseases
C.Kidney trouble
D.None of these
A bacterium found in the root nodules of leguminous plants is the:
A.Clostridium
B.Azotobacter
C.Nitrobacter
D.Rhizobium
A chemical, which kills the weeds, is known as:
A.Insecticide
B.Pesticide
C.Herbicide
D.Germicide
Pollution of soil may destroy its structure and:
A.Fertility
B.Porosity
C.Thickness
D.Nitrates
